But hey, atleast something. It’s not like we got an entire race where most classes aren’t explained, right? Not like vulpera have that or anything. 
I think you want some examples? But this is really hard to do. First because we don’t see any Bwonsamdi priests. Atleast I can’t remember any.
And second because troll priests have such a huge variety of abilities shown gameplay wise that it’s a meme now that I think about it.
Let me give you a list of what abilities troll priests according to gameplay can use:
- Priestess Alun’za:
Tainting peoples blood
She can coat her hand in gold and swing it at people
Using deadly cauldron potions
Throwing corrupted gold at people
Summon a spirit who absorbs damage
- Bwonsamdi himself
Explosion of death energies
Creating rifts into the realm of the dead
Binding people for some time to the realm of the dead
- Hex Lord Malacrass
Spirit bolts
Drain peoples power (and I assume life source)
Siphon peoples soul
- High Priest Venoxis
Just to summarize her abilities: lots of poison and toxic abilities. LOTS OF POISON. LOOOOOTS.
And there are many more examples. Just… A huge variety. That is why I am saying. Go crazy on the stuff you wanna do. Not too overpowered ofcourse but still. Huge variety when it comes to troll priest abilities.
Voodoo is also an option. Take a hair out of someones head, put it onto a doll and then inflict curses and stuff on them.